<?php
/** 
* 文件操作函数库 
* @author      alvin 作者 
* @version     1.0 版本号
*/

    /**
     * 数组转xls格式的excel文件
     * @param  array  $data      需要生成excel文件的数组
     * @param  string $filename  生成的excel文件名
     *      示例数据：
            $data = array(
                array(NULL, 2010, 2011, 2012),
                array('Q1',   12,   15,   21),
                array('Q2',   56,   73,   86),
                array('Q3',   52,   61,   69),
                array('Q4',   30,   32,    0),
               );
     */
    function create_xls($data,$filename='simple.xls'){
        ini_set('max_execution_time', '0');
        Vendor('PHPExcel.PHPExcel');
        $filename=str_replace('.xls', '', $filename).'.xls';
        $phpexcel = new PHPExcel();
        $phpexcel->getProperties()
            ->setCreator("Maarten Balliauw")
            ->setLastModifiedBy("Maarten Balliauw")
            ->setTitle("Office 2007 XLSX Test Document")
            ->setSubject("Office 2007 XLSX Test Document")
            ->setDescription("Test document for Office 2007 XLSX, generated using PHP classes.")
            ->setKeywords("office 2007 openxml php")
            ->setCategory("Test result file");
        $phpexcel->getActiveSheet()->fromArray($data);
        $phpexcel->getActiveSheet()->setTitle('Sheet1');
        $phpexcel->setActiveSheetIndex(0);
        header('Content-Type: application/vnd.ms-excel');
        header("Content-Disposition: attachment;filename=$filename");
        header('Cache-Control: max-age=0');
        header('Cache-Control: max-age=1');
        header ('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
        header ('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT'); // always modified
        header ('Cache-Control: cache, must-revalidate'); // HTTP/1.1
        header ('Pragma: public'); // HTTP/1.0
        $objwriter = PHPExcel_IOFactory::createWriter($phpexcel, 'Excel5');
        $objwriter->save('php://output');
        exit;
    }
    
    /**
    * 生成二维码
    * @param  string  $url  url连接
    * @param  integer $size 尺寸 纯数字
    */
    function qrcode($url,$size=4){
        Vendor('Phpqrcode.phpqrcode');
        QRcode::png($url,false,QR_ECLEVEL_L,$size,2,false,0xFFFFFF,0x000000);
    }
    
    /**
    * 文件上传
    * @param array $files
    * @param array $config
    * @return array
    */
    function upload($files, $config = array()){
            $config = array_merge(C('FILE_UPLOAD_CONFIG'), $config);

            $upload = new Think\Upload($config);
            $res    = $upload->upload($files);
            if($res){
                    foreach($res as $arr){
                           
                            $filename = UPLOAD_PATH.'images/' . $arr['savepath'] . $arr['savename'];
                            if(C('IMAGE_WATER_CONFIG.status') && strpos($arr['type'], 'image') !== false){
				image_water($filename);
                            }
                    }
                  
                    return array('status'=>1, 'info'=>'上传成功', 'result'=>$res);
            }else{
                
                    return array('status'=>0, 'info'=>$upload->getError(), 'result'=>null);
            }
    }
    
